Scientific Calculator
fx-991
SCIENTIFIC CALCULATOR
0
DEG
SHIFT
ALPHA
MODE
AC
DEL
sin
cos
tan
log
ln
√
x²
(
)
÷
7
8
9
×
%
4
5
6
−
π
1
2
3
+
e
0
00
.
=
How to Use
Basic arithmetic: Use the number pad and operators (+, -, ×, ÷)
Scientific functions: Click sin, cos, tan, log, or ln, then enter your number
Constants: Use π (pi) and e (euler's number) for calculations
Memory functions: Store and recall numbers using M+ and MR
Toggle between DEG, RAD, and GRAD modes for trigonometric calculations